Seventeenth-Century ‘double writing’ schemes, and a 1676 letter in the phonetic script and real character of John Wilkins

Royal Society Classified Papers XVI contains a letter written in not one but two seemingly mysterious scripts. As a result, this letter has remained until now effectively illegible, and has been miscatalogued. These scripts are rare examples of the written forms devised by John Wilkins to accompany his proposals for an artificial language, published under the auspices of the Royal Society in 1668. This article therefore first correctly identifies and decodes this letter, which is shown to be from the Somersetshire clergyman Andrew Paschall to Robert Hooke in London in 1676, and then surveys other surviving texts written in Wilkins's scripts or language. Finally the article addresses the contents of the letter, namely its author's attempt to build a workable double writing device, in effect an early ‘pantograph’. Designs for such instruments had been much touted in the 1650s, and the complex history of such proposals is unravelled properly for the first time.